The mandate to make disciples of all nations doesn't start with Matthew 28:16-20. Long ago, God made a covenant with Abraham that through him he would be a blessing to the nations.
We can bless the nations by being sensitive to our global partners' needs and helping them, which in turn blesses the people they're sent to reach. Consider serving the global church and getting a vision for God's work in the world through a short-term trip.
If you're interested in serving on a short-term trip, you must fill out an application and be interviewed by members of the Global Outreach Short-Term Trips Committee. All approved trip members must then submit a $250 deposit to reserve their spot and attend the Short-Term Training Seminar and any country-specific team meetings your leader schedules.